Portable electric heater



FIG. 1 is a front elevational view of a portable electric heater incorporating our new design;

FIG. 2 is a top plan view of the portable electric heater shown in FIG. 1;

FIG. 3 is a rear elevational view of the portable electric heater shown in FIG. 1; and,

FIG. 4 is a left side elevational view of the portable electric heater shown in FIG. 1 the right side being a mirror image of that shown.

The bottom of the design is flat and unornamented. 

The ornamental design for a portable electric heater, as shown and described. 